详解C#如何加密解密RAR文件
目录
- 实践过程
- 效果
- 代码
实践过程
效果
代码
public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { FileMenu(Application.ExecutablePath + ",0", Application.ExecutablePath); string[] str = Environment.GetCommandLineArgs(); try { string strFile = ""; for (int i = 2; i < str.Length; i++) strFile += str[i]; FileInfo FInfo = new FileInfo(strFile); if (FInfo.Extension.ToLower() == ".mrrar") textBox1.Text = strFile; } catch { } } //选择要加密或解密的文件 private void button1_Click(object sender, EventArgs e) { openFileDialog1.Filter = "*.rar(rar压缩文件)|*.rar|*.mrrar(mrrar加密文件)|*.mrrar|*.*(所有文件)|*.*"; if (openFileDialog1.ShowDialog() == DialogResult.OK) textBox1.Text = openFileDialog1.FileName; } //加密rar文件 private void button2_Click(object sender, EventArgs e) { string strPwd = textBox2.Text; byte[] btRKey = new byte[0]; if (strPwd.Length == 6) { btRKey = new byte[] { (byte)strPwd[0], (byte)strPwd[1], (byte)strPwd[2], (byte)strPwd[3], (byte)strPwd[4], (byte)strPwd[5], (byte)strPwd[0], (byte)strPwd[1] }; } if (strPwd.Length == 7) { btRKey = new byte[] { (byte)strPwd[0], (byte)strPwd[1], (byte)strPwd[2], (byte)strPwd[3], (byte)strPwd[4], (byte)strPwd[5], (byte)strPwd[6], (byte)strPwd[0] }; } if (strPwd.Length >= 8) { btRKey = new byte[] { (byte)strPwd[0], (byte)strPwd[1], (byte)strPwd[2], (byte)strPwd[3], (byte)strPwd[4], (byte)strPwd[5], (byte)strPwd[6], (byte)strPwd[7] }; } FileStream FStream = new FileStream(textBox1.Text, FileMode.Open, FileAccess.Read); FileStream NewFStream = new FileStream(textBox1.Text + ".mrrar", FileMode.OpenOrCreate, FileAccess.Write); NewFStream.SetLength((long)0); byte[] buffer = new byte[0x400]; int MinNum = 0; long length = FStream.Length; int MaxNum = (int)(length / ((long)0x400)); DES myDES = new DESCryptoServiceProvider(); CryptoStream CStream = new CryptoStream(NewFStream, myDES.CreateEncryptor(btRKey, btRKey), CryptoStreamMode.Write); while (MinNum < length) { int count = FStream.Read(buffer, 0, 0x400); CStream.Write(buffer, 0, count); MinNum += count; } CStream.Close(); NewFStream.Close(); FStream.Close(); File.Delete(textBox1.Text); MessageBox.Show("使用口令加密rar文件成功!", "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information); } //解密rar文件 private void button3_Click(object sender, EventArgs e) { string strPwd = textBox2.Text; FileStream FStream = null; FileStream NewFStream = null; CryptoStream CStream = null; try { try { byte[] btRKey = new byte[0]; if (strPwd.Length == 6) { btRKey = new byte[] { (byte)strPwd[0], (byte)strPwd[1], (byte)strPwd[2], (byte)strPwd[3], (byte)strPwd[4], (byte)strPwd[5], (byte)strPwd[0], (byte)strPwd[1] }; } if (strPwd.Length == 7) { btRKey = new byte[] { (byte)strPwd[0], (byte)strPwd[1], (byte)strPwd[2], (byte)strPwd[3], (byte)strPwd[4], (byte)strPwd[5], (byte)strPwd[6], (byte)strPwd[0] }; } if (strPwd.Length >= 8) { btRKey = new byte[] { (byte)strPwd[0], (byte)strPwd[1], (byte)strPwd[2], (byte)strPwd[3], (byte)strPwd[4], (byte)strPwd[5], (byte)strPwd[6], (byte)strPwd[7] }; } FStream = new FileStream(textBox1.Text, FileMode.Open, FileAccess.Read); string strNewFile = textBox1.Text.Substring(0, textBox1.Text.Length - 6); NewFStream = new FileStream(strNewFile, FileMode.OpenOrCreate, FileAccess.Write); NewFStream.SetLength((long)0); byte[] buffer = new byte[0x400]; int MinNum = 0; long length = FStream.Length; int MaxNum = (int)(length / ((long)0x400)); DES myDES = new DESCryptoServiceProvider(); CStream = new CryptoStream(NewFStream, myDES.CreateDecryptor(btRKey, btRKey), CryptoStreamMode.Write); while (MinNum < length) { int count = FStream.Read(buffer, 0, 0x400); CStream.Write(buffer, 0, count); MinNum += count; } CStream.Close(); FStream.Close(); NewFStream.Close(); File.Delete(textBox1.Text); System.Diagnostics.Process.Start(strNewFile); } catch { MessageBox.Show("口令错误!", "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Error); textBox2.Focus(); } } finally { CStream.Close(); FStream.Close(); NewFStream.Close(); } } //创建快捷菜单 public static void FileMenu(string strPath, string strName) { try { Registry.ClassesRoot.CreateSubKey(".mrrar"); RegistryKey RKey1 = Registry.ClassesRoot.OpenSubKey(".mrrar", true); RKey1.SetValue("", "mrrarfile"); RKey1.Close(); Registry.ClassesRoot.CreateSubKey("mrrarfile"); RegistryKey RKey2 = Registry.ClassesRoot.OpenSubKey("mrrarfile", true); RKey2.CreateSubKey("DefaultIcon"); RKey2.CreateSubKey("shell"); RKey2.Close(); RegistryKey RKey3 = Registry.ClassesRoot.OpenSubKey("mrrarfile\\DefaultIcon", true); RKey3.SetValue("", strPath); RKey3.Close(); RegistryKey RKey4 = Registry.ClassesRoot.OpenSubKey("mrrarfile\\shell", true); RKey4.CreateSubKey("使用口令打开"); RKey4.Close(); RegistryKey RKey5 = Registry.ClassesRoot.OpenSubKey("mrrarfile\\shell\\使用口令打开", true); RKey5.CreateSubKey("command"); RKey5.Close(); RegistryKey RKey6 = Registry.ClassesRoot.OpenSubKey("mrrarfile\\shell\\使用口令打开\\command", true); RKey6.SetValue("", strName + " \\F %1"); RKey6.Close(); } catch { } } }
partial class Form1 { /// <summary> /// 必需的设计器变量。 /// </summary> private System.ComponentModel.IContainer components = null; /// <summary> /// 清理所有正在使用的资源。 /// </summary> /// <param name="disposing">如果应释放托管资源,为 true;否则为 false。</param> protected override void Dispose(bool disposing) { if (disposing && (components != null)) { components.Dispose(); } base.Dispose(disposing); } #region Windows 窗体设计器生成的代码 /// <summary> /// 设计器支持所需的方法 - 不要 /// 使用代码编辑器修改此方法的内容。 /// </summary> private void InitializeComponent() { this.button3 = new System.Windows.Forms.Button(); this.button2 = new System.Windows.Forms.Button(); this.groupBox1 = new System.Windows.Forms.GroupBox(); this.label1 = new System.Windows.Forms.Label(); this.textBox1 = new System.Windows.Forms.TextBox(); this.button1 = new System.Windows.Forms.Button(); this.label3 = new System.Windows.Forms.Label(); this.label2 = new System.Windows.Forms.Label(); this.textBox2 = new System.Windows.Forms.TextBox(); this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog(); this.groupBox1.SuspendLayout(); this.SuspendLayout(); // // button3 // this.button3.Location = new System.Drawing.Point(250, 107); this.button3.Name = "button3"; this.button3.Size = new System.Drawing.Size(59, 27); this.button3.TabIndex = 11; this.button3.Text = "打开"; this.button3.UseVisualStyleBackColor = true; this.button3.Click += new System.EventHandler(this.button3_Click); // // button2 // this.button2.Location = new System.Drawing.Point(185, 107); this.button2.Name = "button2"; this.button2.Size = new System.Drawing.Size(59, 27); this.button2.TabIndex = 12; this.button2.Text = "加密"; this.button2.UseVisualStyleBackColor = true; this.button2.Click += new System.EventHandler(this.button2_Click); // // groupBox1 // this.groupBox1.Controls.Add(this.label1); this.groupBox1.Controls.Add(this.textBox1); this.groupBox1.Controls.Add(this.button1); this.groupBox1.Controls.Add(this.label3); this.groupBox1.Controls.Add(this.label2); this.groupBox1.Controls.Add(this.textBox2); this.groupBox1.Location = new System.Drawing.Point(5, 9); this.groupBox1.Name = "groupBox1"; this.groupBox1.Size = new System.Drawing.Size(304, 92); this.groupBox1.TabIndex = 10; this.groupBox1.TabStop = false; this.groupBox1.Text = "rar文件加/解密设置"; // // label1 // this.label1.AutoSize = true; this.label1.Location = new System.Drawing.Point(6, 17); this.label1.Name = "label1"; this.label1.Size = new System.Drawing.Size(95, 12); this.label1.TabIndex = 0; this.label1.Text = "请选择rar文件:"; // // textBox1 // this.textBox1.Location = new System.Drawing.Point(32, 35); this.textBox1.Name = "textBox1"; this.textBox1.Size = new System.Drawing.Size(225, 21); this.textBox1.TabIndex = 1; // // button1 // this.button1.Location = new System.Drawing.Point(263, 33); this.button1.Name = "button1"; this.button1.Size = new System.Drawing.Size(33, 23); this.button1.TabIndex = 2; this.button1.Text = "…"; this.button1.UseVisualStyleBackColor = true; this.button1.Click += new System.EventHandler(this.button1_Click); // // label3 // this.label3.AutoSize = true; this.label3.ForeColor = System.Drawing.Color.Red; this.label3.Location = new System.Drawing.Point(201, 66); this.label3.Name = "label3"; this.label3.Size = new System.Drawing.Size(95, 12); this.label3.TabIndex = 5; this.label3.Text = "(密码应大于6位)"; // // label2 // this.label2.AutoSize = true; this.label2.Location = new System.Drawing.Point(7, 66); this.label2.Name = "label2"; this.label2.Size = new System.Drawing.Size(65, 12); this.label2.TabIndex = 3; this.label2.Text = "加密口令:"; // // textBox2 // this.textBox2.Location = new System.Drawing.Point(73, 63); this.textBox2.Name = "textBox2"; this.textBox2.PasswordChar = '*'; this.textBox2.Size = new System.Drawing.Size(127, 21); this.textBox2.TabIndex = 4; // // openFileDialog1 // this.openFileDialog1.FileName = "openFileDialog1"; // // Form1 // this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F); this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; this.ClientSize = new System.Drawing.Size(316, 140); this.Controls.Add(this.button3); this.Controls.Add(this.button2); this.Controls.Add(this.groupBox1); this.MaximizeBox = false; this.MinimizeBox = false; this.Name = "Form1"; this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen; this.Text = "用口令加密rar压缩文件"; this.Load += new System.EventHandler(this.Form1_Load); this.groupBox1.ResumeLayout(false); this.groupBox1.PerformLayout(); this.ResumeLayout(false); } #endregion private System.Windows.Forms.Button button3; private System.Windows.Forms.Button button2; private System.Windows.Forms.GroupBox groupBox1; private System.Windows.Forms.Label label1; private System.Windows.Forms.TextBox textBox1; private System.Windows.Forms.Button button1; private System.Windows.Forms.Label label3; private System.Windows.Forms.Label label2; private System.Windows.Forms.TextBox textBox2; private System.Windows.Forms.OpenFileDialog openFileDialog1; }
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